Affiliation: | 1. David Reher is Professor of Population History at the Facultad de Ciencias Políticas y Sociología of the Universidad Complutense de Madrid Spain;1. Department of Sociology, University of California-Los Angeles, Los Angeles, CA 90095-1551, USA;2. Division of Humanities and Social Sciences, California Institute of Technology, Pasadena, CA 91125, USA;1. Child and Adolescent Health Research Unit (CAHRU), Department of PE, Sport and Leisure Studies, University of Edinburgh, St. Leonard''s Land, Holyrood Road, Edinburgh EH8 8AQ, UK;2. Public Health Sciences Section, Department of Community Health Sciences, University of Edinburgh Medical School, Teviot Place, Edinburgh EH8 9AG, UK |